Do you know how 1)______ calories are there in an average hamburger or in an apple? How 2) ____ water should people drink every day? To keep fit and stay healthy some people always try to keep balance between what they eat and what activity they do regularly. For example, if you swim for 20 minutes you burn so 3) ______ energy which in calories 140. If you run for 20 minutes you burn 300 calories. Some athletes spend 4) _________ hours training for the competition. Good sleep is another important factor of being healthy. People who suffer from insomnia sleep only 5)______ hours in a day. Do you know how 6)______ sleep does an average person get every night? Помогите нужно вставить слова​